Fernando Daniel Quesada Pereira
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View article: Efficient Integral Equation Analysis of Arbitrarily Shaped Rectangular Waveguide Discontinuities Including Conducting Objects
Efficient Integral Equation Analysis of Arbitrarily Shaped Rectangular Waveguide Discontinuities Including Conducting Objects Open
In this contribution, an Integral Equation (IE) formulation is proposed for the analysis of microwave circuits, based on the junction of two different rectangular waveguides coupled by an arbitrarily shaped zero thickness discontinuity. Th…
View article: Design of Rectangular Waveguide Bandpass Filters with Transmission Zeros Using High-Qu Complementary Split Ring Resonators with Irises
Design of Rectangular Waveguide Bandpass Filters with Transmission Zeros Using High-Qu Complementary Split Ring Resonators with Irises Open
This paper introduces a novel bandpass filter designed in rectangular waveguide (RW) technology using an inline structure. The main design concept involves inserting a complementary split-ring resonator (CSRR) into the RW crosssection alon…
View article: Efficient Integral Equation Analysis of 3-D Rectangular Waveguide Microwave Circuits by Using Green’s Functions Accelerated With the Ewald Method
Efficient Integral Equation Analysis of 3-D Rectangular Waveguide Microwave Circuits by Using Green’s Functions Accelerated With the Ewald Method Open
In this contribution, an electric field integral equation (EFIE) formulation is proposed, for the analysis of microwave circuits based on rectangular waveguides with an unlimited number of arbitrarily 3-D-shaped conducting elements. For th…
View article: Design of Evanescent-Mode Rectangular Waveguide Inline Bandpass Filters With Transmission Zeros Using Split Ring Resonators
Design of Evanescent-Mode Rectangular Waveguide Inline Bandpass Filters With Transmission Zeros Using Split Ring Resonators Open
This paper introduces a novel bandpass filter designed in rectangular waveguide (RW) technology using an inline structure. The main design concept involves inserting a complementary split-ring resonator (CSRR) into the RW cross-section alo…
View article: Design and Implementation of Quart-Torus Waveguide Filters for Layout Optimization Using Additive Manufacturing Techniques
Design and Implementation of Quart-Torus Waveguide Filters for Layout Optimization Using Additive Manufacturing Techniques Open
In this contribution, a novel quart-torus cavity for the design of waveguide filters is presented. A filter breadboard based on this kind of cavity is designed at Ku-band, and then fabricated using Additive Manufacturing (AM) techniques. T…
View article: Efficient Calculation of the 3-D Rectangular Waveguide Green’s Functions Derivatives by the Ewald Method
Efficient Calculation of the 3-D Rectangular Waveguide Green’s Functions Derivatives by the Ewald Method Open
In this contribution, the Ewald method has efficiently
\nbeen applied to accelerate the computation of the rectangular waveguide Green’s functions derivatives. Based on previous works, we have outlined new approximation formulae that avoid…
View article: UTD-PO Solution for E-Plane Radiation Pattern Calculation of Rectangular Horn Antennas With Rectangular-Shaped Corrugations
UTD-PO Solution for E-Plane Radiation Pattern Calculation of Rectangular Horn Antennas With Rectangular-Shaped Corrugations Open
Proposing a novel hybrid uniform theory of diffraction-physical optics (UTD-PO) formulation, we develop a method to calculate the E-plane radiation pattern of corrugated E-plane rectangular horn antennas with rectangular corrugations. We d…
View article: Integral equation analysis of multiport H‐plane microwave circuits by using 2D rectangular cavity Green's functions accelerated by the Ewald Method
Integral equation analysis of multiport H‐plane microwave circuits by using 2D rectangular cavity Green's functions accelerated by the Ewald Method Open
An integral equation technique for the analysis of multiport H‐plane microwave circuits composed of an unlimited number of arbitrarily shaped metallic and/or dielectric elements is proposed. The structure under study is divided into differ…
View article: A novel low-pass filter based on dielectric impedance inverters to enhance the multipactor breakdown threshold
A novel low-pass filter based on dielectric impedance inverters to enhance the multipactor breakdown threshold Open
This work presents a novel low-pass filter based on using dielectric materials, in the critical areas of the structure, to prevent high-power space condition adverse effects, like multipactor breakdown. It is shown that the use of dielectr…
View article: Multimode Equivalent Networks for Shielded Microwave Circuits With Thick Metallizations
Multimode Equivalent Networks for Shielded Microwave Circuits With Thick Metallizations Open
In this article, we show how the multimode equivalent network (MEN) technique can be extended to the analysis of multilayer boxed planar microwave circuits that are built using a thick metallization. This analysis is carried out considerin…
View article: Wideband Bandpass Filters Using a Novel Thick Metallization Technology
Wideband Bandpass Filters Using a Novel Thick Metallization Technology Open
A new class of wideband bandpass filters based on using thick metallic bars as microwave resonators, instead of common microstrip lines, is presented. These bars provide a series of advantages over fully planar printed technologies, includ…
View article: Novel Rigorous Multimode Equivalent Network Formulation for Boxed Planar Circuits with Arbitrarily Shaped Metallizations
Novel Rigorous Multimode Equivalent Network Formulation for Boxed Planar Circuits with Arbitrarily Shaped Metallizations Open
The Multimode Equivalent Network (MEN) formulation has been traditionally employed for the efficient and accurate analysis of waveguide devices. In this paper, we extend the use of the MEN to the analysis of zero thickness, multilayer plan…
View article: Rigorous Multimode Equivalent Network Representation of Multilayer Planar Circuits
Rigorous Multimode Equivalent Network Representation of Multilayer Planar Circuits Open
The objective of this paper is to extend the use of the Multimode Equivalent Network formulation, originally developed to analyze waveguide junctions, to the analysis of planar circuits that include arbitrary rectangular printed, zero thic…
View article: Novel Spatial Domain Integral Equation Formulation for the Analysis of Rectangular Waveguide Steps Close to Arbitrarily Shaped Dielectric and/or Conducting Posts
Novel Spatial Domain Integral Equation Formulation for the Analysis of Rectangular Waveguide Steps Close to Arbitrarily Shaped Dielectric and/or Conducting Posts Open
In this paper, a novel integral equation formulation expressed in the spatial domain is proposed for the analysis of rectangular waveguide step discontinuities. The important novelty of the proposed formulation is that which allows to easi…
View article: An Efficient Technique to Assess the Convergence of the Multimode Equivalent Network for Waveguide Devices
An Efficient Technique to Assess the Convergence of the Multimode Equivalent Network for Waveguide Devices Open
[EN] Numerical methods are widely used to analyze and design microwave components for communication applications.In the implementation of any numerical technique, however, there are always a set of parameters that must be properly adjusted…
View article: Green's functions for 2D periodic structures and applications to the analysis of waveguide components
Green's functions for 2D periodic structures and applications to the analysis of waveguide components Open
In this paper different and efficient acceleration techniques for the evaluation of two-dimensional Green's functions with 1D and 2D periodicities are discussed. The proposed summation numerical methods are based on the appropiate extracti…
View article: Integral-Equation Formulation for the Analysis of Capacitive Waveguide Filters Containing Dielectric and Metallic Arbitrarily Shaped Objects and Novel Applications
Integral-Equation Formulation for the Analysis of Capacitive Waveguide Filters Containing Dielectric and Metallic Arbitrarily Shaped Objects and Novel Applications Open
This paper presents an integral equation formulation specialized for the analysis of capacitive waveguide circuits, which include arbitrarily shaped conducting and homogeneous magnetic/dielectric objects. The technique benefits from the sy…
View article: Highly efficient full‐wave electromagnetic analysis of 3‐D arbitrarily shaped waveguide microwave devices using an integral equation technique
Highly efficient full‐wave electromagnetic analysis of 3‐D arbitrarily shaped waveguide microwave devices using an integral equation technique Open
A novel technique for the full‐wave analysis of 3‐D complex waveguide devices is presented. This new formulation, based on the Boundary Integral‐Resonant Mode Expansion (BI‐RME) method, allows the rigorous full‐wave electromagnetic charact…